What was found
AFT CABIN FLOOR L-2 DOOR LOWER SILL INNER CHORD CORRODED IN SEVERAL AREAS. GROUNDED - YES. REMOVED CORROSION ON THE L2 LOWER SILL, INNER CHORD, ORIGINAL THICKNESS 0.080, REMOVED 0.017, REMAINING THICKNESS 0.063 AND FOUND TO BE OUT OF LIMITS IAW B737-800 SRM 53-70-15-1A-1. REMOVED AND REPLACED WITH NEW INNER CHORD, PART 147A8540-7 IAW B737-800 SRM 51-40-02 AND BOEING DRAWING 147A8501 REV B SHEETS 91-92. DOT F496 REMOVED.